I'm in a similar situation to yours. I got 161V (87%), 168Q (95%), and 4.5AW (80%) on the first sitting, and 166V (96%), 168Q (95%), and 4.0AW (56%). Quantitative is by far the most important (I took it the second time to try for the 170). I think writing is more important than verbal, which makes me lean toward the second one. But the I'm just too proud of my second verbal score, especially being an engineering major, non-native speaker. I think I'll send both. I think there is a possibility they just consider the highest of each, since they should be interested in what I am capable of achieving.